@media (min-width: 600px) and (max-width: 1000px) {
  header,
  h1,
  h2 {
    color: green !important;
  }
}
@media (max-width: 599px) {
  h1,
  h2 {
    font-size: 16px !important;
    color: rgb(126, 144, 126) !important;
  }
}

@media (max-width: 530px) {
  img {
    width: 100% !important;
  }
}
@media (max-width:559px) {
  header {
    font-size:29px;
  }
}